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Rolex is expect at developing professional watches, and it’s well know that every Rolex watch embodies Rolex’s obsession with perfection and its insistence on unique design styles. And the GMT Master watches is one specific kind of watches of Rolex, because it’s designed for pilots and serious travelers who always fly around the world. Now let's feel the unique charm of the GMT Master watch together.Rolex designed and developed the GMT Master in collaboration with the Pan Am to meet the needs of international airline pilots in 1955. At that time, the GMT Master watches had allowed the time of any two time zones to be read simultaneously.And today Rolex continues to show the unique splendor of the GMT Master II to the world. Multiple Time ZonesThe GMT Master II has a 24-hour hand and an independent, adjustable 12-hour hand. So you can set the time of another time zone while the watch is functioning normally, maintaining the exact time. The two hour hands allow you to read the time of any two time zones simultaneously.The Ceramic BezelThe GMT Master II’s 40 mm case is graced with a ceramic bezel which is forged by an extremely hard ceramic material that has an excellent corrosion resistance. What's more, there are numerals and graduations in yellow gold or platinum on the bezel.The Ceramic Bezel 24-Hour Bezel24-Hour BezelThe GMT Master II has a bi-directional rotating 24-hour bezel and the well-identified GMT hand. Thanks to the use of a high quality spring, the bezel can be turned to both directions quickly and accurately, without virtually wear and tear. But you can just turn it from one position to another without pause. And that makes it possible for you to read the time of the 3rd time zone.The history of the GMT Master is always sandwiched between legend and reality. The GMT Master watches have became he best chose for many travelers; what's more, its elegant and unique design has win the GMT Master II great popularity, and it enjoys high reputation in the world. So, why not experience the charm of the GMT Master yourself, maybe you will find some surprise from it?

Just like its famous namesake, the RICHARD LANGE watch family is fully devoted to the scientific facets of horology with a focus on the utmost degree of precision. It has its origins in the understanding that the accuracy of a timepiece reflects the competence of the master. At A. Lange & Sohne, this insight dates back far into the 19th century. With its resettable subsidiary seconds, the RICHARD LANGE "Referenzuhr" continues this tradition. The actuation of a push piece above the crown causes its seconds hand to jump to zero and wait there as long as the push piece is depressed. During that time, a vertical disc clutch assures that the ongoing measurement of time is not interrupted �C the movement keeps running. When the push piece is released, the seconds hand restarts instantaneously.This ZERO-RESTART function is very useful for stopping events of short durations. It is also ideal for synchronising watches and clocks at different locations: the actuation of the push piece synchronises the seconds hand of the instrument with that of a reference clock exactly when its hand passes the 60-seconds mark ("zero"). This action "stores" the time of the reference clock and allows it to be transferred to other timekeeping instruments. The RICHARD LANGE "Referenzuhr" pays homage to a stronghold of time measurement that played in important role in 19th-century Dresden: the timekeeping service of the Mathematics and Physics Salon.Keeper of timeAs the "keeper of time", this scientific institution was responsible for precisely determining the local time and *** it available to the city's population. So in a sense, it was the predecessor of present-day atomic clocks and time signal transmitters. But in those days, the correct time had to be calculated on the basis of astronomical observations. The result was then transferred to a high-precision pendulum clock in the salon. Thereafter, this reference time was saved with especially accurate pocket chronometers and then "carried" to the public clocks. It was also communicated to persons and authorities who needed to know the precise time. Subscribers of the timekeeping service included astronomers and watchmakers as well as officials of the nascent railway system.With its off-centre subsidiary seconds, the dial of the RICHARD LANGE "Referenzuhr" is reminiscent of a historic precursor made in 1811 �C a pocket chronometer known to have been used for synchronisation purposes by the timekeeping service. It was crafted by Johann Heinrich Seyffert who did more to promote precision horology in Dresden than any other watchmaker. His most prominent customer, naturalist and explorer Alexander von Humboldt, purchased one of Seyffert's chronometers for his now acclaimed Latin American expedition.The RICHARD LANGE "Referenzuhr" features a large balance wheel with eccentric poising weights and a Lange balance spring developed and manufactured in-house. Beating at a frequency of six semi-oscillations per second, it delivers the precision that can be legitimately expected of an instrument designed to serve the sciences. A glance through the sapphire-crystal caseback is a feast for the eyes of those who delight in technical finesse: both the ZERO-RESTART lever mechanism and the winding train are visibly arranged above the three-quarter plate. The strictly limited edition �C 50 watches in platinum and 75 in pink gold �C underscores the exclusivity of this coveted collector's item.